Instead, she and her friend gave all the euros they had left on them, Akiwowo giving 20 and her friend handing over the five she had left, and figured they'd give the bride another small gift when she returned from her honeymoon.

Akiwowo planned to gift the bride something to make up for having run out of cash. (Twitter)

The pair almost missed their flight home to London the next day, so when Akiwowo received a message from the bride that morning she figured it was just to check in.

"My naive self thought she was messaging to ask if we got home okay... N O P E."

Instead, the bride had written a passive aggressive message demanding that Akiwowo and her friend hand over at least 125 euros more than they'd already given, insisting they "hadn't covered the wedding costs."

"You seemed to enjoy [the wedding] plenty but this was not reflected in your contribution to our wedding costs," the bride wrote.

"The average contribution was 100 euros per person… we would appreciate if you could please make a bank transfer to our account for the difference… which is a minimum of 125 euro for the two of you."

Akiwowo was shocked by the message the bride sent her the morning after the wedding. (Twitter)

Akiwowo shared the message with her friend, who wasn't even a friend of the bride's, totally bewildered that the bride would demand more money from them the very morning after her wedding.

"In that 12 hours of leaving the wedding we travelled back to London from Romania she did a full calculation," Akiwowo tweetd about the bride's demand.

"My friend said we now have shares in the marriage. That the marriage must last FOREVER."

Though Akiwowo added the couple are still together, she's "no longer friend with the debt collector" and by the sounds of things neither she nor her friend ever sent the extra money.